GB1218526A - Steering and braking system for self-laying track vehicles - Google Patents

Steering and braking system for self-laying track vehicles

Info

Publication number
GB1218526A
GB1218526A GB24013/69A GB2401369A GB1218526A GB 1218526 A GB1218526 A GB 1218526A GB 24013/69 A GB24013/69 A GB 24013/69A GB 2401369 A GB2401369 A GB 2401369A GB 1218526 A GB1218526 A GB 1218526A
Authority
GB
United Kingdom
Prior art keywords
plunger
pressure
valve
actuator
gallery
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired
Application number
GB24013/69A
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Massey Ferguson Services NV
Original Assignee
Massey Ferguson Services NV
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Massey Ferguson Services NV filed Critical Massey Ferguson Services NV
Publication of GB1218526A publication Critical patent/GB1218526A/en
Expired legal-status Critical Current

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60T—VEHICLE BRAKE CONTROL SYSTEMS OR PARTS THEREOF; BRAKE CONTROL SYSTEMS OR PARTS THEREOF, IN GENERAL; ARRANGEMENT OF BRAKING ELEMENTS ON VEHICLES IN GENERAL; PORTABLE DEVICES FOR PREVENTING UNWANTED MOVEMENT OF VEHICLES; VEHICLE MODIFICATIONS TO FACILITATE COOLING OF BRAKES
    • B60T11/00—Transmitting braking action from initiating means to ultimate brake actuator without power assistance or drive or where such assistance or drive is irrelevant
    • B60T11/10—Transmitting braking action from initiating means to ultimate brake actuator without power assistance or drive or where such assistance or drive is irrelevant transmitting by fluid means, e.g. hydraulic
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60T—VEHICLE BRAKE CONTROL SYSTEMS OR PARTS THEREOF; BRAKE CONTROL SYSTEMS OR PARTS THEREOF, IN GENERAL; ARRANGEMENT OF BRAKING ELEMENTS ON VEHICLES IN GENERAL; PORTABLE DEVICES FOR PREVENTING UNWANTED MOVEMENT OF VEHICLES; VEHICLE MODIFICATIONS TO FACILITATE COOLING OF BRAKES
    • B60T13/00—Transmitting braking action from initiating means to ultimate brake actuator with power assistance or drive; Brake systems incorporating such transmitting means, e.g. air-pressure brake systems
    • B60T13/10—Transmitting braking action from initiating means to ultimate brake actuator with power assistance or drive; Brake systems incorporating such transmitting means, e.g. air-pressure brake systems with fluid assistance, drive, or release
    • B60T13/12—Transmitting braking action from initiating means to ultimate brake actuator with power assistance or drive; Brake systems incorporating such transmitting means, e.g. air-pressure brake systems with fluid assistance, drive, or release the fluid being liquid
    • B60T13/16—Transmitting braking action from initiating means to ultimate brake actuator with power assistance or drive; Brake systems incorporating such transmitting means, e.g. air-pressure brake systems with fluid assistance, drive, or release the fluid being liquid using pumps directly, i.e. without interposition of accumulators or reservoirs
    • B60T13/18—Transmitting braking action from initiating means to ultimate brake actuator with power assistance or drive; Brake systems incorporating such transmitting means, e.g. air-pressure brake systems with fluid assistance, drive, or release the fluid being liquid using pumps directly, i.e. without interposition of accumulators or reservoirs with control of pump output delivery, e.g. by distributor valves
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B62—LAND VEHICLES FOR TRAVELLING OTHERWISE THAN ON RAILS
    • B62D—MOTOR VEHICLES; TRAILERS
    • B62D11/00—Steering non-deflectable wheels; Steering endless tracks or the like
    • B62D11/02—Steering non-deflectable wheels; Steering endless tracks or the like by differentially driving ground-engaging elements on opposite vehicle sides
    • B62D11/06—Steering non-deflectable wheels; Steering endless tracks or the like by differentially driving ground-engaging elements on opposite vehicle sides by means of a single main power source
    • B62D11/08—Steering non-deflectable wheels; Steering endless tracks or the like by differentially driving ground-engaging elements on opposite vehicle sides by means of a single main power source using brakes or clutches as main steering-effecting means
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T137/00—Fluid handling
    • Y10T137/2496—Self-proportioning or correlating systems
    • Y10T137/2559—Self-controlled branched flow systems
    • Y10T137/265—Plural outflows
    • Y10T137/2663—Pressure responsive
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T137/00—Fluid handling
    • Y10T137/7722—Line condition change responsive valves
    • Y10T137/7837—Direct response valves [i.e., check valve type]
    • Y10T137/7904—Reciprocating valves
    • Y10T137/7922—Spring biased
    • Y10T137/7925—Piston-type valves
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T137/00—Fluid handling
    • Y10T137/8593—Systems
    • Y10T137/86493—Multi-way valve unit
    • Y10T137/86574—Supply and exhaust
    • Y10T137/8667—Reciprocating valve
    • Y10T137/86694—Piston valve
    • Y10T137/8671—With annular passage [e.g., spool]

Landscapes

  • Engineering & Computer Science (AREA)
  • Transportation (AREA)
  • Mechanical Engineering (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Non-Deflectable Wheels, Steering Of Trailers, Or Other Steering (AREA)

Abstract

1,218,526. Controlling vehicles. MASSEYFEKGUSON SERVICES N.V. 12 May, 1969 [24 May, 1968], No. 24013/69. Heading B7H. A steering and braking system, for an endless track vehicle with steering clutches and brakes, comprises a pair of manual control valves 5 each movable from a first rest position (Fig. 1) successively to a position for initiating movement of a respective hydraulic de-clutch actuator 55 and subsequently to a position for applying a brake 62, and a single sequencing pilot-operated relief valve 1 having a pilot pressure connection 46 to the de-clutch actuator, a connection 2 to a high pressure oil source and a connection 19, 20, 25 and 26 or 27 to a brake actuator 59 constituting a first spill passage from the valve 1. On starting the pump 3, with the valve 5 in the rest position, pressure builds up in the chamber 44 moving the stepped valve plunger 29 to the left until an annulus 21 in a sleeve 11 is uncovered permitting spillage of oil through passages 22, 23 to a reservoir. On movement of the control valve plunger 70 to the left, the gallery 75 bridges galleries 52, 53 allowing oil to flow from pump pressure bore 6 of the valve 1 through pipe 9 to operate the de-clutch actuator 55 and thence through a pipe 46 to a pressure sensing space 43 of the valve 1. The pressure in the space 43 acts on the large end of the plunger 29 to move it to the right until it covers the exhaust passage 22 and partially covers the holes (15) (Fig. 5, not shown) and 18, increasing the pressure in the space 44 until a balance is obtained between the pressures on the ends of the plunger 29 and the plunger 37 is moved to the right permitting the oil to exhaust through passages 38, 42, 34 and 35. Meantime gallery 74 is in register with the gallery 58 permitting the space 44 to vent through the holes 15, pipe 26, gallery 58 and passages 71, 72, 63 in the plunger 70 and brake actuator 59. On further leftward movement of the plunger 70 the plunger nose 77 abuts the actuator 59 to operate the brake directly and to permit a pressure build-up in the interior of the actuator 59, thereby urging it to the left. This increasing pressure acting on the nose 77 is communicated to the driver.
GB24013/69A 1968-05-24 1969-05-12 Steering and braking system for self-laying track vehicles Expired GB1218526A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
IT1689368 1968-05-24

Publications (1)

Publication Number Publication Date
GB1218526A true GB1218526A (en) 1971-01-06

Family

ID=11149391

Family Applications (1)

Application Number Title Priority Date Filing Date
GB24013/69A Expired GB1218526A (en) 1968-05-24 1969-05-12 Steering and braking system for self-laying track vehicles

Country Status (6)

Country Link
US (1) US3595352A (en)
ES (1) ES367407A1 (en)
FR (1) FR2009254A1 (en)
GB (1) GB1218526A (en)
SE (1) SE364010B (en)
YU (1) YU31624B (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2351844A1 (en) * 1976-05-21 1977-12-16 Caterpillar Tractor Co VEHICLE CLUTCH AND STEERING BRAKE CONTROL UNIT

Families Citing this family (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2186913A5 (en) * 1972-05-31 1974-01-11 Komatsu Mfg Co Ltd
US4029183A (en) * 1973-06-20 1977-06-14 Kabushiki Kaisha Komatsu Seisakusho Control valve for steering clutch and brake
US3899058A (en) * 1974-02-01 1975-08-12 Caterpillar Tractor Co Combined tractor steering clutch and brake control system
US4307796A (en) * 1976-05-21 1981-12-29 Caterpillar Tractor Co. Vehicle steering brake and clutch control
EP0008909B1 (en) * 1978-09-08 1983-07-20 Automotive Products Public Limited Company Clutch brake mechanisms
JP4276491B2 (en) * 2003-08-04 2009-06-10 日立建機株式会社 Directional valve block

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2897787A (en) * 1955-07-29 1959-08-04 Int Harvester Co Servo-motor
US2817426A (en) * 1956-09-17 1957-12-24 Le Tourneau Westinghouse Compa Control system
US3020721A (en) * 1960-05-09 1962-02-13 Webster Electric Co Inc Clutch and brake valve
US3374846A (en) * 1964-08-29 1968-03-26 Landini Spa Steering and braking hydraulics

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2351844A1 (en) * 1976-05-21 1977-12-16 Caterpillar Tractor Co VEHICLE CLUTCH AND STEERING BRAKE CONTROL UNIT

Also Published As

Publication number Publication date
YU31624B (en) 1973-08-31
YU123969A (en) 1973-02-28
US3595352A (en) 1971-07-27
SE364010B (en) 1974-02-11
ES367407A1 (en) 1971-04-01
FR2009254A1 (en) 1970-01-30
DE1919001A1 (en) 1971-06-16
DE1919001B2 (en) 1977-03-10

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Legal Events

Date Code Title Description
PS Patent sealed [section 19, patents act 1949]
PCNP Patent ceased through non-payment of renewal fee